in the united states continue to rise. annual premiums rose 4% for americans who got their insurance through work. the annual premium is close to $15,000. facebook ceo mark zuckerberg made his first public comments since may. he called the stock's performance disappointing but is remaining hopeful. facebook shares have lost nearly 50% of their value since the ipo. and let the buzz begin, apple is set to announce the latest version of the iphone today. industry analysts aspect the new iphone will have a larger screen, a smaller dock connector and faster processor. also likely to have a different face than the iphone 4. >> the 4s is iphone 4. you couldn't tell the difference. this is a phone you can see from across the room and know it's the newer device. >> reporter: the new iphone isn't just revving up gadget geeks. sales of the next generation smartphone could add up to half of a percentage point to the fourth quarter gdp. quite a product there. >> i know. it will help the whole economy. >> reporter: might bring me over. >> come hang with the cool kids. >> reporter: i'm not that coo

texas. the state has recorded nearly 900 cases. that's 45% of all west nile cases in the united states. aerial pesticide spraying last month in and around dallas dramatically reduced the mosquito population. in july, half of the mosquitoes tested positive for west nile, now it's just 5%. but doctors believe the number of reported cases will increase because weeks can pass before people infected with west nile develop serious symptoms. dr. beth bell of the centers for disease control and prevention expects the outbreak to last until october. >> oh, it takes a little time for people after they get sick to go to the doctor, to get the blood test. what we're counting are cases of illness which occurred several weeks ago. >> and that's not the total number of people who may be sick from west nile virus. the cdc says hundreds more people probably have become ill but just never went to a doctor. anna werner, cbs news, dallas. >>> quick break now on a thursday morning. when we come back, central american shakeup. a major earthquake rattles sending people running. this is the morning news. donut! chips

economy. >> you're asking people to hire you as president of the united states. they want to hear some specifics. >> i can tell them specifically i won't raise taxes on middle class folks. i will not lower the share of taxes paid by high income individuals. >> president obama told steve croft romney's plan won't work. >> he has one note. tax cuts for the wealthy. rolling back regulations as a recipe for success. >> reporter: after romney released summaries of past income tax returns on friday, romney paid 14% last year because most of his income came from capital gains. he was asked if it was fair to pay the low rate. >> it's the right way to encourage economic growth. to get people to invest, to start businesses, to put people to work. >> reporter: the obama camp jumped on that comment issuing a statement saying independent economists don't agree that refusing to ask the wealthiest to pay their fair share and over taxing middle class families will promote economic growth or job creation. romney's taxes are part of an obama campaign ad which hit the gop candidate on a secretly rec